【作者】 陈琦；

【导师】 陈丽华； 温凌燕；

【作者基本信息】 合肥工业大学 ， 建筑与土木工程（专业学位）， 2020， 硕士

【摘要】 近些年来,双钢板-组合剪力墙作为一种新型的抗侧力构件形式,拥有良好的承载力好变形耗能能力,本文在国内外学者研究的基础之上,提出了一种L型连接件-双钢板-混凝土组合剪力墙,并设计制作了4片组合墙体试件,主要研究剪跨比和端柱长度的改变对组合墙体抗震受力性能的影响,本文的研究内容如下:对4片L型连接件-双钢板-混凝土组合剪力墙试件进行低周反复荷载试验,其中试件的参数变量为剪跨比、端柱长度。各墙体试件在循环荷载作用下均发生较为典型的受弯破坏,并以所得试验数据为基础,分析得到各试件的荷载-位移滞回曲线、骨架曲线、强度刚度退化曲线以及延性耗能能力等各项指标,结果表明:各试件的滞回曲线形状均较为饱满,该组合剪力墙具有较好的变形耗能能力。随着端柱长度的增加,墙体峰值水平荷载出现少许下降,初始刚度以及强度刚度退化速度并未产生明显影响,退化趋势近似相同,各试件的延性耗能能力有一定程度的提高。墙体剪跨比的降低,使其峰值水平荷载得以提高,明显提高其初始刚度,但刚度退化速度加快,且试件的延性耗能能力因此减弱。对计算双钢板-混凝土组合剪力墙正截面抗弯承载力的两种方法进行分析和比较:全截面塑性法和应变协调法,并将理论计算值与试验值进行对比,结果表明,两种计算方法所得值基本相近,均小于试验值,但全截面塑性法更加简洁明确,更便于日后推广使用。采用有限元ABAQUS软件对此次4片组合剪力墙试件进行数值模拟,将模型计算结果与原有试验数据之间进行对比分析,两者之间较为吻合,基本相同,这表明采用有限元软件建立模型可以较为准确地模拟出双钢板-混凝土组合墙在低周反复荷载下的抗震性能。更多还原

【Abstract】 In recent years,the double steel plate-combination shear wall as a new type of anti-lateral force member has good bearing capacity and good deformation and energy dissipation capacity.Based on the research of domestic and foreign scholars,this paper proposes an L-shaped The connection piece-double steel plate-concrete composite shear wall,and designed and produced 4 composite wall specimens,mainly to study the impact of the change of the shear span ratio and the length of the end column on the seismic performance of the composite wall.as follows:The low-cycle repeated load test was carried out on 4 pieces of L-shaped connector-double steel plate-concrete composite shear wall specimens,in which the parameters of the specimens were the shear span ratio and the length of the end column.The specimens of each wall are subject to typical bending failure under cyclic loading.Based on the obtained test data,the load-displacement hysteresis curve,skeleton curve,strength stiffness degradation curve and ductility consumption of each specimen are analyzed and obtained.Various indicators,such as energy capacity,the results show that the hysteresis curve shape of each specimen is relatively full,and the composite shear wall has good deformation energy dissipation capacity.With the increase of the length of the end column,the peak horizontal load of the wall decreased slightly.The initial stiffness and the degradation rate of the strength and stiffness did not have a significant effect.The degradation trends were approximately the same,and the ductility and energy dissipation capacity of each specimen increased to some extent.The reduction of the wall-to-span ratio of the wall increases its peak horizontal load and significantly increases its initial stiffness,but the rate of stiffness degradation accelerates,and the ductile energy dissipation capacity of the specimen is reduced.Analyze and compare the two methods of calculating the normal section flexural bearing capacity of double steel plate-concrete composite shear wall: full section plastic method and strain coordination method,and compare the theoretical calculation value with the experimental value,the results show that the two The values ??obtained by the calculation method are basically similar,which are less than the test value,but the full-section plastic method is more concise and clear,and is more convenient for future use.The finite element ABAQUS software was used to numerically simulate the four composite shear wall specimens,and the results of the model were compared with theoriginal test data.The two are relatively consistent and basically the same,which indicates that the finite element is used.The model established by the software can accurately simulate the seismic performance of the double steel plate-concrete composite wall under low-cycle repeated loads.更多还原